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666 is one of the most famous triangular numbers, wherever its fame comes from, and it's known as the "Number of the Beast" first from the Bible, only...

number is just the nth triangular number times 2. — Preceding unsigned comment added by Santropedro (talk • contribs) It's also the nth square number...

the Mac in both Chrome and Safari, the formula immediately after "The triangular numbers are given by the following explicit formulas:" seems to be truncated...

into the description a discussion of the role of weapons in the triangular trade. A number of sources (example: the UNESCO General History of Africa) point...

not a power of 2. Do we need to cite a 1 page paper in The Mathematical Gazette to see that a triangular number with unique odd divisor is the product...

triangular number got my attention. This is true, and though I've never heard of the concept before, I was able to list all the truncated triangular numbers...

consecutive triangular numbers, and the sum of the squares of these triangular numbers equals the number triangled. For example, 4=1+3; 1+2+3+4=10; 12+32=10...

two less than an odd, prime-indexed triangular number or one more than an even, prime-indexed triangular number; A096234 Base 10 "digit addition generators"...

(sequence A154883 in the OEIS) (specifically 78629, where 350 is near-triangular, as the sum of the digits [2, 26])), which does not appear for quite some...

intruders occurs, the NET change is a double triangular number PLUS 2, which explains the SO magic number intervals. Where the possibility exists of multiple...

the number 666, which include: It's the the sum of the first 36 natural numbers, and thus a triangular number. Since 36 is both square and triangular, it's...

for different purposes: the Schur triangular form states that any matrix is unitarily equivalent to an upper triangular one; the singular value decomposition...

first number of the form p q r 3 . {\displaystyle pqr^{3}.} 120 is also equal to the sum of the first fifteen integers, or fifteenth triangular number Σ15...

of numbering shells from scratch, inherited from the beginning of the 19th century, is in contradiction with logically understandable numbering: 1, 2...

linear system, since the matrix on the left side is a (non-strict) lower triangular matrix, so the usual stepwise substitution can be used - this sentence...

depiction of a triangular harp instrument. (Ross, p. 38; John Bannerman, "The Clarsach and Clarsair", in Scottish Studies, 30, 1991, pp. 1-17). “There are...

close to 1 as wished'. I think it would be important to note which of the axioms are `true' axioms (those defining a triangular norm and a triangular conorm)...

trigonal hosohedron, {2,3} has 2 vertices and 3 edges. Anyway, it's 1-skeleton is a triangular multigraph I guess. Tom Ruen (talk) 23:18, 29 October 2008 (UTC)...

digital roots is {1, 3, 1, 3, 1, 1, 3, 3, 1, 1, 3, 3, 1, 3, 3, 3, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 1, 3, 3, 1, 3, 3, 1, 3, 1, 1, 1, 1, 1, 3, 3}. The bases...

the OR is 1:1. Here we have ONE use of each doubled triangular number between every SINGLE magic number. For a prolate ellipsoid of OR 2:1 (twice as long...